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2015-02-06 19:50:17 +0200 commented answer Question about sum and diff

And if I want to build a function which give the nth-derivative of a function g relative to x? That code won't work: 'f(x,n)=diff(g(x),x,n)` How to do that?

2015-02-06 19:43:50 +0200 commented answer Question about sum and diff

Thanks a lot. I didn't know how to tell Sage that n is an integer (I tried assume) and not a symbol. I think I have to learn more about list in Sage. It seems to be a powerful tool.

2015-02-06 18:58:31 +0200 received badge  Editor (source)
2015-02-06 18:57:46 +0200 asked a question Question about sum and diff

Why this code :

f(x)=sum(diff(sin(x),x,n),n,1,10)
f(x)

does not work?